n
14
7
Maintenance and Inspection
n
Daily Inspection
1. Check that the pump operates smoothly, without generating abnormal sounds or vibration.
2. Check the level of the liquid in the suction tank, and the suction pressure.
3. Compare the discharge pressure and current measured during operation with the specifications indicated
on the motor and pump nameplates to verify normal pump load.
* Note that the indicated value of the pressure gauge varies in proportion to the specific gravity of the
liquid.
Caution The valve of the pressure gauge or vacuum gauge should be opened only when mea-
surements are recorded. It must be closed after completion of each measurement. If the valve re-
mains open during operation, the gauge mechanism may be affected by abnormal pressure caused by
water hammer.
4. If a spare pump is included in the installation, keep it ready for use by operating it from time to time.
n
Periodic Inspection
To ensure efficient, smooth operation of the pump, carry out periodic inspection by following the procedure
described below. When carrying out an overhaul inspection, handle the internal bushings and plastic compo-
nents most carefully. Since the outer drive magnet and inner magnet capsule are very powerful, handle these
components with caution. Take care not to trap hands and fingers between the magnets and metal objects.
Also avoid positioning the magnets near any electronic device (or ATM cards with magnetic strips) that
could be affected by a strong magnetic field.
!
